Valve.



c. VON PHILP.

VALVE.

. APPLICATION FILED JAN-2. L913. 1,157,196., Patented 0ct.19,1915.

. Q N? I :n' l I l N K all I ii i A 11*; i

' names,

is extremely simple in construction,

. arranged seat member having a seat head 12 having 7 I stem 13'outwardly through the stufiing box. 18 on one side E D STA CASIMIR VONPHILIP, OF SOUTH BETHLEHEM, PENNSYLVANIA, ASSIG-NOR TO BETHLE- HEM STEELCOMPANY, OF SOUTH BET OF PENNSYLVANIA.

HLEHEM, PENNSYLVANIA, A. CORPORATION VALVE.

Specification of Letters Patent.

Application filed January 2, 1913. Serial No. 739,853.

. cation.

This invention relates to valves and more particularly to valves forextremely high pressures, such as are used in connection with heavyhydraulic machinery..

The invention has reference to the packing means for the valve and hasfor its object the provision of a packing means which durable andthoroughly effective and reliable in operation.

In valves used heretofore in connection with heavy hydraulic machineryleather packings have been employed but these packingshave been of sucha character that they have not been durable and they have alsogiventrouble on account of becoming displaced and holding the valve ofiits seat. In my invention I have provided a simple leather or otherflexible packing ring which is suitably housed against the packin sureat one side 0 the parts so is not subjected to the load on the valve. II have illustrated one form of my invention in the accompanying drawingwhich is a longitudinal section through a check valve. In this drawing10 indicates the casing or 11 for a valve faces by the fluid presthevalve. I have also that the packing ring member comprising a screwedthereon a nut-13. The head 12 has secured thereto the stem 13 which.passes through a suitable stufling box 14 in the easing 10 and hassecured on its outer end a collar 15 which engages a nut 16 whereb thecollar'is held in position." A spring 1 is arranged between the casing,10 andthe collar 15 and normally tends'to draw the The casing 10 has apassage of the valve member and on the opposite side thereof a chamber19 in which are arranged the usual radial ribs. 20 which guide the valvemember in its movements.

The head 12 is provided with a shoulder 21 which closely fits thepassage 18- and v 55 forms with the wall of said passage a re- State ofPennsylvania, have invented.

and which is forced stricted annular port or passage 22 which is closedby the packing ring 23, when the valve is in the closed position. Thering 23 is arranged in a suitable recess in the nut 13,

the open side of which recess is partially closed by the shoulder 21. Anannular space or groove 24 is provided in the nut 13 at the back of thepacking ring 23, this space communicating with the chamber 19 by meansof one or more ports 25.'

As thusconstructed the valve is adapted to normally permit the fluid toflow from the passage 18 into the chamber 19 and prevent flow in thereverse direction. The valve is shown in the drawing in the closedposition and when the pressure in'the chamber 19 is reduced below thatin the passage 18,'the valve will be opened against the tension of thespring 17 and thereby permit the fluid to flow through the valve. Whenthe pressure is equalized on both sides of the valve, the spring 17moves the valve to closed position, in which position the nut 13positively engages the seat 11. Where extremely high pressures are usedit is impracticable to maintain a non-leaking joint between engagingmetal surfaces and in order to prevent back flow from the chamber 1-9through the passage 22 into the passage 18, the flexible packing 23 hasbeen provided, this packing beingforced against a surface on theshoulder 21 and also against the surface of the seat 11 which is inalinement With the packing surface on the shoulder, by the presisprovided with large bearing surfaces both and the paclnng and 100 forthe valve proper that these surfaces are mplanes at ri ht angles to theaxis of the valve. It will a so be noted that the packing is rectangularin cross section and has substantially equal. portions bearing on thecasing" and a flat annular seat on the valve,- such seats being sameplane and separated so slightly that the packing can not be forced inbetween them. The pressures are normal to the valve 116 upon a .flatannular seat substantially in the I seat and packing seats and very high.pressures are sustained without leakage or distortion of the packing orundue strain upon any of. the parts ofthe valve, and the valve -may beapplied to other types of valves than that illustrated and that theminor details of construction may be varled, within the scope of theappended claims, and therefore I donot wish to be limited to' theexact'construction shown and described. 7

Having described the invention what is claimed and desired to be securedby Letters Patent is,

1. In a high pressure fluid valve structure, the combination with acasing having a valve chamber, a passage leading into the chamber, andan annular valve seat in said chamber surrounding the passage, of avalve having a, portion within and nearly filling the mouth of saidpassage, and an annular portion within the chamber adapted to rest onsaid seat, a packing ring of flexible material between said portions,the outer'p'ortion of the packing ring being arranged to rest on thevalve seat and the inner portion being seated on that part of the valvewithin the ,passage, the' valve and packing seats being in planes atright-angles to the axis of'the valve and the valve being constructed toadmit pressure to the back of the packing.

2. In a high pressure valve structure, the combination with a casinghaving a valve chamber, a passage leading into the chamher and anannular valve seat in said chamber surrounding the passage, of a valvebav-, ing a portion within and nearly filling the mouth of said passage,and an annular portion within the chamber adapted to rest on 'said seat,aflexible packing ring of rectangular cross section within said annularportion, the .outer portion of the packing ring having a seat on thecasing, andthe inner portion being seated on that part of thevalvewithin the passage, all valve and packing seatsbeing in planes at rightangles to the axis of the valve and the valve being constructed to admitpressure to the back of the packing.

3. In a high pressure valve structure, the

combination with a casing having 'a valve chamber, a passage leadinginto the chamher and an annular valve seat in said chamber" surroundingthe passage, of a valve having a portion within andnearly filling themouth of said passage, and an annular nut portion 13 having threadedengagement with the valve body and adapted-to rest on said seat, thevalve body and nut portion having between them an annular space ofrectangular cross section, and a packing ring of flexible materialloosely fitted in said annular space, the outer portion ofthe pack ingring being arranged to rest on a seat surrounding the mouth of thepassage and the inner portion beingseated on that part of the valvewithin the, passage, the valve and packing seats being; in planes atright angles to the axis'of the valve and the valve being constructed toa mit back of thepacking.

pressure the In testimony whereof I afiix my signature in presence oftwo witnesses. I

CASIMIR VON PHILP. ,.Witnesses: C. G. NORDSTROM,

C. R. Dnnsnn'r.

